Water level sensor and alarm



FIG. 1 is a front view of a water level sensor and alarm according to my design;

FIG. 2 is a rear view of my design of FIG. 1.

FIG. 3 is a view of my design of FIGS. 1 and 2 in a storage position.

FIG. 4 is a side view of my design of FIGS. 1, 2 and 3 showing my design in a further position. 

The ornamental design for a water level sensor and alarm, as shown and described. 